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- Title
Actibacterium atlanticum sp. nov., isolated from surface seawater of the Atlantic Ocean.
- Authors
Li, Guizhen; Lai, Qiliang; Sun, Fengqin; Du, Yaping; Liu, Xiupian; Li, Guangyu; Xie, Yunbiao; Shao, Zongze
- Abstract
A taxonomic study was carried out on strain 22II-S11-z10, which was isolated from the surface seawater of the Atlantic Ocean. The bacterium was found to be Gram-stain negative, oxidase and catalase positive, oval- to rod-shaped and non-motile. Growth was observed at salinities of 0.5-9 % and at temperatures of 10-41 °C. The isolate can reduce nitrate to nitrite, degrade gelatin and aesculin, but can not degrade Tween 80. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain 22II-S11-z10 belongs to the genus Actibacterium, with the highest sequence similarity to the type strain Actibacterium mucosum CECT 7668 (97.3 %). The DNA-DNA hybridization estimate value between strain 22II-S11-z10 and A. mucosum CECT 7668 was 19.30 ± 2.29 %. The principal fatty acids were identified as Summed Feature 8 (C ω7 c/ω6 c as defined by the MIDI system, 75.2 %) and Summed Feature 3 (C ω7 c/ ω6 c, 6.9 %). The G+C content of the chromosomal DNA was determined to be 59.0 mol%. The respiratory quinone was determined to be Q-10 (100 %). Phosphatidylglycerol, phosphatidylcholine, two phospholipids, two aminolipids and two lipids were identified in the polar lipids. The combined genotypic and phenotypic data show that strain 22II-S11-z10 represents a novel species within the genus Actibacterium, for which the name Actibacterium atlanticum sp. nov. is proposed, with the type strain 22II-S11-z10 (=MCCC 1A09298 = LMG 27158).
- Subjects
ATLANTIC Ocean; AQUATIC bacteria; BACTERIA classification; BACTERIAL diversity; GRAM-negative bacteria; RIBOSOMAL RNA; UBIQUINONES; BACTERIA phylogeny
- Publication
Antonie van Leeuwenhoek, 2014, Vol 106, Issue 2, p325
- ISSN
0003-6072
- Publication type
Article
- DOI
10.1007/s10482-014-0203-7